Do not specify version constraints to the bundled gem

Author: hidakatsuya

thinreports.gemspec

@@ -23,9 +23,9 @@ Gem::Specification.new do |s|
   s.require_paths = ['lib']
 
   s.add_dependency 'prawn', '>= 2.4.0'
-  s.add_dependency 'matrix', '~> 0.4'
   s.add_dependency 'prawn-disable_word_break', '>= 2.3.1'
-  s.add_dependency 'rexml'
   s.add_dependency 'base64'
   s.add_dependency 'bigdecimal'
+  s.add_dependency 'matrix'
+  s.add_dependency 'rexml'
 end